diff --git a/library/json.po b/library/json.po
index bca98e8f85..04ee6860c9 100644
--- a/library/json.po
+++ b/library/json.po
@@ -132,7 +132,9 @@ msgid ""
 "If *check_circular* is false (default: ``True``), then the circular "
 "reference check for container types will be skipped and a circular reference "
 "will result in a :exc:`RecursionError` (or worse)."
-msgstr ""
+msgstr "如果 *chech_circular* 設為 false（預設是 ``True``），那麼 json 將不會檢查"
+"是否有循環參照 (circular reference) 的情形。如果有循環參照的情形發生，則會出直接"
+"由交由 Python 本來的機制出處理錯誤，亦即 :exc:`RecursionError` （或者更糟的錯誤）。"
 
 #: ../../library/json.rst:162
 msgid ""
@@ -141,7 +143,10 @@ msgid ""
 "``inf``, ``-inf``) in strict compliance of the JSON specification. If "
 "*allow_nan* is true, their JavaScript equivalents (``NaN``, ``Infinity``, ``-"
 "Infinity``) will be used."
-msgstr ""
+msgstr "如果 *allow_nan* 設為 False（預設值為 ``True``），那麼串聯化 (serialize)"
+":class:`float` 的特殊值 (``nan``, ``inf``, ``-inf``) 會觸發 :exc:`ValueError`，"
+"這麼設定是為了遵守較嚴格的 JSON 規範。如果設為 True，則串聯化這些極值不會出錯，而是"
+"會被自動代換成 JavaScript 上等價的值 (``NaN``, ``Infinity``, ``-Infinity``)"
 
 #: ../../library/json.rst:168 ../../library/json.rst:452
 msgid ""